package com.colodoo.framework.creater.plugin;

import org.mybatis.generator.api.CommentGenerator;
import org.mybatis.generator.api.IntrospectedColumn;
import org.mybatis.generator.api.IntrospectedTable;
import org.mybatis.generator.api.dom.java.CompilationUnit;
import org.mybatis.generator.api.dom.java.Field;
import org.mybatis.generator.api.dom.java.InnerClass;
import org.mybatis.generator.api.dom.java.InnerEnum;
import org.mybatis.generator.api.dom.java.JavaElement;
import org.mybatis.generator.api.dom.java.Method;
import org.mybatis.generator.api.dom.java.Parameter;
import org.mybatis.generator.api.dom.java.TopLevelClass;
import org.mybatis.generator.api.dom.xml.XmlElement;
import org.mybatis.generator.config.MergeConstants;
import org.mybatis.generator.config.PropertyRegistry;

import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Properties;

import static org.mybatis.generator.internal.util.StringUtility.isTrue;

public class CustomCommentGenerator implements CommentGenerator {

	/**
	 * properties配置文件
	 */
	private Properties properties;
	/**
	 * properties配置文件
	 */
	private Properties systemPro;

	/*
	 * 父类时间
	 */
	private boolean suppressDate;

	/**
	 * 父类所有注释
	 */
	private boolean suppressAllComments;

	/**
	 * 当前时间
	 */
	private String currentDateStr;

	public CustomCommentGenerator() {
		super();
		properties = new Properties();
		systemPro = System.getProperties();
		suppressDate = false;
		suppressAllComments = false;
		currentDateStr = (new SimpleDateFormat("yyyy-MM-dd")).format(new Date());
	}

	/**
	 * Java类的类注释
	 */
	@Override
	public void addClassComment(InnerClass innerClass, IntrospectedTable introspectedTable) {
		if (suppressAllComments) {
			return;
		}

		StringBuilder sb = new StringBuilder();
		innerClass.addJavaDocLine("/**");
		sb.append(" * ");
		sb.append(introspectedTable.getFullyQualifiedTable());
		sb.append(" ");
		sb.append(getDateString());
		innerClass.addJavaDocLine(sb.toString().replace("\n", " "));
		innerClass.addJavaDocLine(" */");
	}

	/**
	 * 为类添加注释
	 */
	@Override
	public void addClassComment(InnerClass innerClass, IntrospectedTable introspectedTable, boolean markAsDoNotDelete) {
		if (suppressAllComments) {
			return;
		}
		StringBuilder sb = new StringBuilder();
		innerClass.addJavaDocLine("/**");
		sb.append(" * ");
		sb.append(" * ");
		sb.append(introspectedTable.getFullyQualifiedTable());
		innerClass.addJavaDocLine(sb.toString().replace("\n", " "));
		sb.setLength(0);
		sb.append(" * @author ");
		sb.append(systemPro.getProperty("user.name"));
		sb.append(" ");
		sb.append(currentDateStr);
		innerClass.addJavaDocLine(" */");
	}

	/**
	 * Mybatis的Mapper.xml文件里面的注释
	 */
	@Override
	public void addComment(XmlElement xmlElement) {

	}

	/**
	 * 
	 * @Title addConfigurationProperties
	 * @Description: 从该配置中的任何属性添加此实例的属性CommentGenerator配置。 这个方法将在任何其他方法之前被调用。
	 * @Author fendo
	 * @Date 2017年10月5日 下午3:45:58
	 * @return
	 * @throws
	 */
	@Override
	public void addConfigurationProperties(Properties properties) {
		this.properties.putAll(properties);
		suppressDate = isTrue(properties.getProperty(PropertyRegistry.COMMENT_GENERATOR_SUPPRESS_DATE));
		suppressAllComments = isTrue(properties.getProperty(PropertyRegistry.COMMENT_GENERATOR_SUPPRESS_ALL_COMMENTS));
	}

	/**
	 * 
	 * @Title getDateString
	 * @Description: 此方法返回格式化的日期字符串以包含在Javadoc标记中和XML注释。 如果您不想要日期，则可以返回null在这些文档元素中。
	 * @Author fendo
	 * @Date 2017年10月5日 下午3:45:58
	 * @return
	 * @throws
	 */
	protected String getDateString() {
		String result = null;
		if (!suppressDate) {
			result = currentDateStr;
		}
		return result;
	}

	/**
	 * 
	 * @Title addJavadocTag
	 * @Description: 此方法为其添加了自定义javadoc标签。
	 * @Author fendo
	 * @Date 2017年10月5日 下午3:49:05
	 * @param javaElement
	 * @param markAsDoNotDelete
	 * @throws
	 */
	protected void addJavadocTag(JavaElement javaElement, boolean markAsDoNotDelete) {
		javaElement.addJavaDocLine(" *");
		StringBuilder sb = new StringBuilder();
		sb.append(" * ");
		sb.append(MergeConstants.NEW_ELEMENT_TAG);
		if (markAsDoNotDelete) {
			sb.append(" do_not_delete_during_merge");
		}
		String s = getDateString();
		if (s != null) {
			sb.append(' ');
			sb.append(s);
		}
		javaElement.addJavaDocLine(sb.toString());
	}

	/**
	 * 为枚举添加注释
	 */
	@Override
	public void addEnumComment(InnerEnum innerEnum, IntrospectedTable introspectedTable) {
		if (suppressAllComments) {
			return;
		}
		StringBuilder sb = new StringBuilder();
		innerEnum.addJavaDocLine("/**");
		sb.append(" * ");
		sb.append(introspectedTable.getFullyQualifiedTable());
		innerEnum.addJavaDocLine(sb.toString().replace("\n", " "));
		innerEnum.addJavaDocLine(" */");
	}

	/**
	 * Java属性注释
	 */
	@Override
	public void addFieldComment(Field field, IntrospectedTable introspectedTable) {
		if (suppressAllComments) {
			return;
		}
		StringBuilder sb = new StringBuilder();
		field.addJavaDocLine("/**");
		sb.append(" * ");
		sb.append(introspectedTable.getFullyQualifiedTable());
		field.addJavaDocLine(sb.toString().replace("\n", " "));
		field.addJavaDocLine(" */");

	}

	/**
	 * 为字段添加注释
	 */
	@Override
	public void addFieldComment(Field field, IntrospectedTable introspectedTable, IntrospectedColumn introspectedColumn) {
		if (suppressAllComments) {
			return;
		}
		field.addJavaDocLine("/**");
		field.addJavaDocLine(" * " + introspectedColumn.getRemarks());
		field.addJavaDocLine(" */");
		// 处理时间类型
		if(introspectedColumn.isJDBCDateColumn()) {
			field.addJavaDocLine("@JsonFormat(pattern = \"yyyy-MM-dd\", timezone = \"GMT+8\")");
			field.addJavaDocLine("@DateTimeFormat(pattern = \"yyyy-MM-dd\")");
		}
		if(introspectedColumn.isJDBCTimeColumn() || "TIMESTAMP".equals(introspectedColumn.getJdbcTypeName())) {
			field.addJavaDocLine("@JsonFormat(pattern = \"yyyy-MM-dd HH:mm:ss\", timezone = \"GMT+8\")");
			field.addJavaDocLine("@DateTimeFormat(pattern = \"yyyy-MM-dd HH:mm:ss\")");
		}
	}

	/**
	 * 普通方法的注释，这里主要是XXXMapper.java里面的接口方法的注释
	 */
	@Override
	public void addGeneralMethodComment(Method method, IntrospectedTable introspectedTable) {
		if (suppressAllComments) {
			return;
		}
		method.addJavaDocLine("/**");
		addJavadocTag(method, false);
		method.addJavaDocLine(" */");
	}

	/**
	 * 给getter方法加注释
	 */
	@Override
	public void addGetterComment(Method method, IntrospectedTable introspectedTable, IntrospectedColumn introspectedColumn) {
		if (suppressAllComments) {
			return;
		}
		method.addJavaDocLine("/**");
		StringBuilder sb = new StringBuilder();
		sb.append(" * ");
		sb.append(introspectedColumn.getRemarks());
		method.addJavaDocLine(sb.toString().replace("\n", " "));
		sb.setLength(0);
		sb.append(" * @return ");
		sb.append(introspectedColumn.getActualColumnName());
		sb.append(" ");
		sb.append(introspectedColumn.getRemarks());
		method.addJavaDocLine(sb.toString().replace("\n", " "));
		method.addJavaDocLine(" */");
	}

	/**
	 * 给Java文件加注释，这个注释是在文件的顶部，也就是package上面。
	 */
	@Override
	public void addJavaFileComment(CompilationUnit compilationUnit) {
	}

	/**
	 * 为模型类添加注释
	 */
	@Override
	public void addModelClassComment(TopLevelClass arg0, IntrospectedTable arg1) {
		arg0.addImportedType("org.springframework.format.annotation.DateTimeFormat");
		arg0.addImportedType("com.fasterxml.jackson.annotation.JsonFormat");
	}

	/**
	 * 为调用此方法作为根元素的第一个子节点添加注释。
	 */
	@Override
	public void addRootComment(XmlElement arg0) {

	}

	/**
	 * 给setter方法加注释
	 */
	@Override
	public void addSetterComment(Method method, IntrospectedTable introspectedTable, IntrospectedColumn introspectedColumn) {
		if (suppressAllComments) {
			return;
		}
		method.addJavaDocLine("/**");
		StringBuilder sb = new StringBuilder();
		sb.append(" * ");
		sb.append(introspectedColumn.getRemarks());
		method.addJavaDocLine(sb.toString().replace("\n", " "));
		Parameter parm = method.getParameters().get(0);
		sb.setLength(0);
		sb.append(" * @param ");
		sb.append(parm.getName());
		sb.append(" ");
		sb.append(introspectedColumn.getRemarks());
		method.addJavaDocLine(sb.toString().replace("\n", " "));
		method.addJavaDocLine(" */");
	}

}
